312606523218 has 32 divisors (see below), whose sum is σ = 711704973312. Its totient is φ = 90610586000.

The previous prime is 312606523139. The next prime is 312606523231. The reversal of 312606523218 is 812325606213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102965058 + ... + 102968093.

It is an arithmetic number, because the mean of its divisors is an integer number (22240780416).

Almost surely, 2^312606523218 is an apocalyptic number.

312606523218 is an abundant number, since it is smaller than the sum of its proper divisors (399098450094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312606523218 is a wasteful number, since it uses less digits than its factorization.

312606523218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205933190.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 312606523218 in words is "three hundred twelve billion, six hundred six million, five hundred twenty-three thousand, two hundred eighteen".